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|Noun||1.||May beetle - any of various large European beetles destructive to vegetation as both larvae and adult|
melolonthid beetle - any of various beetles of the family (or subfamily) Melolonthidae
|2.||May beetle - any of various large usually brown North American leaf-eating beetles common in late spring; the larvae feed on roots of grasses etc.|
scarabaean, scarabaeid, scarabaeid beetle - any of numerous species of stout-bodied beetles having heads with horny spikes